Robberproof fixture, lock, and alarm for banks and the like



Feb. 19, 1935. REGER 1,992,096

ROBBERPROOF FIXTURE, LOCK, AND ALARM FOR BANKS AND THE LIKE I Filed Dec. 5, 1932 2 Sheets-Sheet 1 ATTORNEYS s a 43 i I 0 56 T la INVENTQR HerbertEReger" 76 BY y% W a Feb. 19, 1935.

H. H. REGER ROBBERPROOF FIXTURE, LOCK, AND ALARM FOR BANKS AND THE LIKE Filed Dec. 5,-1932 DOOR LOCKING MECH.

z'snets-sheei 2 TIMED DELAY RELAY- 57 INVENTOR glTNESSES Herber'iJLReger ATTORNELS Patented Feb. 19, 1935 UNITED STATES PATENT OFFICE ROBBERPROOF FIXTURE, Look, AND

ALARM FOR BANKS AND THE LIKE v Herbert H. Roger, Brooklyn, N. Y.

Application December 5, 1932, Serial No. 645,837 4 Claims. (01. 201.01)

This invention relates to a device for protectat the mercy of the bandits without a chance of ing money, valuable papers and other valuable locking the doors or otherwise trapping the articles, and particularly to an improved construcrobbers. v tion for banks or other institutions dealing in In the present invention means have been pro- 5 money or valuable securities wherein means are vided which is particularly adapted to be used 5 provided which are adapted to trap a bandit or during business hours for discouraging hold-ups robber and, if desired, give an-alarm indicating or trapping bandits or robbers in case a holdhis presence. up is attempted. In order that this idea may Another object of the invention is to provide be carriedout special furniture, locks and the for banks and the like fixtures or furniture which like have been provided so that, as illustrated in 10 will segregate the bank into three zones con- Figure 1, the bank is divided into three zones, nected and associated with means for locking the namely, the vault zone, the access zone or area, communicating doorsbetween the respective zones and the public zone. The last two zones may at y e. I be freely entered at any time by any of the patrons A further object, more specifically, is to provide of the bank, and they may leave freely at. any 15 furniture, locks and associated devices whereby time while only the bank attendants will be any of the attendants in the bank may cause the found in the vault zone. By reason of dividing locks to operate at any time silently so as to prethe bank into these three zones the bandits would vent the escape of any person whom it is desired be confined to either the public-zone or to the to hold within the bank. access zone, and means have been provided for 20 An additional object is to provide a system of locking the doors to these two zones at any time protection for banks and other financial instituby any of the-attendants in the vault zone. Also tions whereby raids by bandits during business means have been provided for sounding an alarm hours canbe frustrated, and in addition whereby which when sounded will prevent the locking the banditsmay be captured before they leave mechanism from becoming unlocked until the 26 the p emi s. same has been released from a point exterior of In the accompanying drawings the building, so that all persons in the bank under Figure 1 is a horizontal sectional view through these circumstances will be confined in the builda building showing a schematic view of the aring until the police 'or other authority arrives and 30 rangement of the furniture and certain other operates the exterior releasing means. 30 parts disclosing certain features of the invention; In the accompanying, drawings one embodiment Figure 2 is a vertical longitudinal section of the invention has been disclosed and one diathrough Figure 1 approximately on the line 22; gram showing the various circuits involved, but

Figure 3 is a side view of the locking mechait willbe evident that other detailed structures nism shown in Figure'2 associated with each of and other circuits may be used provided the same 35 the revolving doors illustrated in Figure 1, part of general" idea is maintained whereby the bandits the doorsbeing shown in section, and the lock, will be discouraged and whereby they will be casing or housing being shown in section; trapped before they can effect their. escape.

Figure 4 is a sectional view through Figure 3 As illustrated in Figure 1, there is provided a 40 on the line 4-4; building 1 which may be' of any desired kind, and 40 Figure 5 is a diagram showing substantially in this building a vault 2 is provided, the same in top view certain of the locking features illusbeing of any desired structure. Adjacent vault 2 trated in Figure 3 and the door with which it is is a space 3 which has been designated as the associated; vault area or zone. A bullet-proof partition 4 Figure 6 is a diagram of the wiring of the operextends from one wall of the building 1 to the 45 ating mechanism for the lock, the siren and cerother and in this wall a number of windows 5 are tain other parts. provided. Back of these windows are arranged In many banks various means have been prosuitable partitions and other furniture 6 forming videcl for the protection of the funds against cages for the various tellers. Wall 4 is preferably being stolen at night time, but during the day provided with a single door 7 which is main- 50 and during business hours there is very little tained locked at all times except when an attendprotection provided except by watchmen or hired ant desires to enter or leave the area or zone 3. police ofiicers. In case of a raid by a number'of Arranged adjacent area or zone 3 is an area or bandits the watchmen or police officers could zone 8 which isknown as the corridor or access easily be overcome and the clerks would then be zone. This zone is enclosed by the walls of the 55 building 1, wall 4 and wall 9, which last mentioned wall is provided with revolving doors l0 and 11.

It will thus be seen that when any one passes through doors or 11 and these doors are locked, the person will be trapped in zone 8 as he cannot pass through the bullet-proof door 7 and he cannot pass through walls 9 or either of the doors 10 or 11.

Adjacent zone 8 is public area or zone.12 which comprises all the space between wall 9 and the front of the building. The front of the building is provided with any suitable form of entrance,

doors 13 and, if desired, with windows 14. Windows 14 should be barred so thatno one. can enter or leave through them. A pair of revolving doors 15 and 16 with suitable casings are provided, said casings merging into walls 17 and'l8 connected to the front of the building 1. These parts are-formed of bullet-proof material but functionordinarily as regular revolving doors and casings so that thepatrons can enter and leave freely. However, whenany of-the mechanism hereinafter fully describedis operated, doors 15 and 16 as well as doors 10 and 11 will be quickly and silently locked so that no one can pass any of these doors. The locking action at first is only temporary and after a short time interval the locks will be silently and automatically released unless the circuit for the locking mechanism has been opened, which takes place upon the closing of a certain switch or button19 (Fig. 6). When this button is closed temporarily the siren 20 will begin to function and the. locking mechanism of the respective doors will not be released until the mechanism in the control box 21 arranged exterior of the buildinghas been causedto function manually by a police onicer or someone else. It will thus be seen that when the footpedal 22 is depressed until the contact points '23 and 24have been engaged, means are caused to operate for locking the doors, which. doors will remain locked until the time delaymechanism K is, functioned. This mechanism maybe set to function at one minuteintervals, atfive minute intervals or at other intervals as desired.

It will, therefore, be 'seen that in case pedal 22 is closed accidentally, the locks will be moved to locking. position but will be released on the time interval. set, as for instance, five minutes. However, if bandits are making a raid on the bank and switch 22 is' closed, the locks are quickly moved to-locking position and then one of the switch buttons 19 is pushed closing this circuit, whereupon the siren 20 will begin to function and the locks will be prevented from unlocking until released from the control box 21 asheretofore explained.

In Figures 3 and 4 details of the locking mechanism are disclosed, the same to beapplied to all of the doors shown, in Figure 1 except door 7 which is locked by a hand operated lock. Door 16shown in Figure 3 is the usualtype of revolving door and is provided with a central shaft 25 which is journaled in any suitable manner at both ends and at the upper end extending into the casing 26 where ajournal spool 27 is provided. The locking disc 28 is rigidly-secured by a pin or otherwise to shaft 25 and rests on the spool 27. The locking disc 28 is provided with four notches, namely, notches 29, 30, 31 and 32, as shown more particularly in'Figure 5. It will be understood that notches 29 and 31 are diametrically oppositeeach other, and notches and 32 are. also diametrically opposite each other, thus dividing the disc 28 into four sections. A locking bar 33 is adapted to move downwardly into either pair of notches, as shown in dotted lines in Figure 5, for locking disc 28, shaft 25 and the door against rotation. It will be noted from Figure 5 that the respective notches in disc 28 are much larger than the locking bar 33, whereby a limited movement of the door may be had so that when the locking bar 33 functions with the blades 34 of the door in the full line position shown in Figure 5, backward movement may be had until the parts assume the dotted position shown in Figure 5, whereby any one caught within the door may either escape outwardly or inwardly according to what part of the door he occupies.

shortarms 39 and 40 of the respective levers may" be pivotally connected to the ends of the respective plungers 41 and 42 of the solenoids 43 and 44. Whenbar 33 is elevated or'inits inoperative position, as shown in Fig. 3', both levers 35 and are past dead center and, consequently, bar 33 is held positively in thisv position under the action .of gravity. When conditions are as just described, the solenoids 43 and 44 are deenergized. When the locking-solenoid 43 is energized, it will quickly draw up the plunger 41 and swing the bell crank lever 35 and parts associated therewith to the dotted position shown in Figure 3, whereupon bar 33 will fit into the openings 30 and 32, as shown-in Fig. 5, thus locking the door against operation. It will be understood that solenoid 44 under. these circumstances is deenergized and non-functioning. As soonas bar 33- has been moved downward to'the locking .positionit remains in this position under the action of gravity after solenoid 43 has been deenergized.

To move bar 33 to an unlocking position it is necessary to energize, the opening solenoid and as soon as this is done the plunger 42 will quickly move upwardly swinging bell crank lever 36 to the full line position shown in- Figure 3. This will also cause bell crank lever 35 to swing upwardly and locking bar 33 to move to an unlocked position as showninFigure 3, causing the parts to assume the position shown in-that figure. This action of locking and unlocking may occur as often as desired and will occur as often as solenoids 43 and 44 are energized and deenergized as just described.

In carrying out the invention the locking mechanism as just described is associated with each of the doors, as shown'particularly in Figure 1, except door 7. When the foot switch 22 (Figure 6) is pressed and closed certain circuits will be closed, whereupon solenoid 43 will be energized, and the locking bar 33for each 0! the doors will be lowered to a locking position. If nothing further is done besides temporarily closing switch 22, the mechanism herein described will after a certain time interval turn on current to solenoid 44 unlocking allthe doors. It is to be understood that the doors are locked and unlocked silently so that if it is done accidentally, or intentionally, to confine 'a bandit,, no one knows that the doors have been locked except the person who has closed the switch 22 and those employees who are in a position. to see signal lights, until someone tries to pass through the doors. However, means have been provided as hereinafter described which will sound an alarm and which will prevent the solenoid 44 from functioning until certain parts have been released by someone outside of the building.

It will be understood that a number of switch buttons 19 are to be provided. Preferably there is a switch button 19 and a foot switch 22 arranged in or adjacent each of the cages 6, and in addition a light, for instance, the light 45 shown in Figure 6 and hereinafter fully described, is provided. By arranging the parts as .just described any one of a number of persons may cause the device to function. For instance, if

.a highway man is holding up one or two of the tellers, they will merely obey the bandit without attempting to close any of the switches while the bandit is in front of them. If any one who is not confronting the bandit sees what is happening, he will step on one of the foot switches 22, and if it is thought desirable, push switch button 19' to cause the siren 20 to sound and the locking mechanism shown in Figure 3 to be locked against release, except through the control box 21 on the outside of the building. If no one sees the bandit except the particular tellers facing the bandit, the device is left unmolested until the bandit leaves the tellers windows and then the tellers themselves can close one of the foot switches 22 either before or after the bandits have passed through doors and 11. Signal lamps 45 light whenever doors lock and warn all employes in position to see the signal light to be on their guard and investigate.

In order that the operation of the locking mechanism shown in Figure 3 and also the operation of the siren and other parts may be more fully understood, attention is directed more particularly to the diagram of Figure 6. In this diagram the mechanism indicated by the letter K is a time delay mechanism which prevents the locking mechanism from opening until a certain time has elapsed according to the way the relay has been set.

When the foot switch 22 has been closed either intentionally or accidentally, current will first flow from source 46 over a circuit including contacts 23 and 24. It is to be understood that the source 46 is a source of current within the building, as for instance, a storage battery, a dry cell battery or, if desired, a small generator. By having the source of current within the building and protected, the bandits cannot make the device inoperative by cutting oiT the supply of current to the bank from an outside source. When the foot switch 22 has been closed, as just mentioned, current will flow from the source 46 to wire 47 and wire 48, but it cannot pass through this wire because the switch 49 is open, said switch being in the control box 21. This will make the wire or conductor 48 positive for its full length including contact 24. Current from contact 24 will pass through switch arm 22, contact 23, wire 50 to one end of the closing solenoid 51, and through closing solenoid 51 to wire 52 which is connected to the negative or return bus wire 53. Current will flow momentarily through this circuit to energize the closing solenoid 51 and thus move switch arms 54 and 52' to closed position so that other circuits will be closed thereby.

When the switch arm 54 is closed current will flow from the positive bus wire 48 through wire 55, electro-magnets 56, wire 57, wire 58, switch arm 54, wire 59, back to the negative bus wire 53, thus energizing the electromagnets 56. While this is taking place current flows from the positive bus wire 60 through wire 61, wire 62, wire 63, switch arm 52, wire 64 to the closing solenoid 43 (see Fig. 6), Wire 65, wire 66, back to the negative bus wire 53. As current flows in this last mentioned circuit solenoid 43 will function to move locking bar 33, as shown in Figure 3, downwardly to locking position, whereby all of the doors will be locked. When the circuit from the magnets 56 has been closed, said magnets will be energized and attract their armature 67 which is connected through suitable means including a spring 68 with switch structure 69 provided with resilient contact arms 70 and 71. The movement of armature 67 will swing contact arm 70 1 over until it engages contact 72 closing the circuit at that point. Arm 71 will not be moved over because of the bell crank lever 73 which is arranged so that arm 74 will prevent movement of the contact arm 71. Arm 74 is supported by a suitable pin 75. Bell crank lever 73 remains in position for holding contact arm 71 against functioning until the extension or abutment 76 on electric motor 77 moves over and strikes the leg 78 of the bell crank lever and swings this leg out of the path of movement of the contact arm 71, whereupon said contact arm will engage contact 79. It will be noted that the contact arm 71 is provided with a hook 80 which engages the resilient contact arm 81 when leg 74 has been moved out of the way and arm 71 moved under the action of armature 67. As hook 80 moves contact arm 81 it will break the engagement of this arm with contact 82 connected with wire 83. It will thus be seen that when the closing solenoid 51 is caused to function by the closing of the switch 22, switch arm 52' will close the circuit of closing solenoid 43 for actuating looking bar 33, and the closing of contact bar 54 will result in the energization of the magnets 56, motor 77 and light 45. i

As the energization of the closing relay is only temporary, it is necessary to provide a second and more permanent closed circuit for the electromagnets 56. This isprovided when the contact arm 70 engages contact 72. When this takes place current will pass from the positive bus wire 48 through Wire 55, magnets 56, wire 57, wire 84 connecting wire 84', contact arm 70, contact 72, wire 85, wire 86, contact bar 87, wire 88, contact bar 89 and wire 90 back to the negative bus wire 53. Current will continue to flow in thelast mentioned circuit after contact bars 52 and'54 have moved to an open position, thus maintaining the magnets 56 energized. As the closing relay 48 has been actuated, it will remain in its actuated position until positively moved therefrom, so that the opening of the circuit of this solenoid will produce no results.

While the contact bar 54 of the closing solenoid 51 is engagingits contacts, current will flow from the positive bus wire through wire 91, lamp 45, wire 83, contact 82, contact arm 81, wire 84, wire 58, contact bar 54, wire 59 and back to the negative bus wire 53, thus causing the lamp 45 to function. When the bar 54 is moved to an open position current will flow through wire 91, lamp 45, wire 83, contact 82, contact arm 81, wire 84, wire 84, contact arm 70, contact 72, wire 85, wire 86, contact bar 87, wire 88, contact bar 89 and wire 90, back to the negative bus wire 53. Current flowing in this last mentioned circuit will cause the lamp 45 to remain functioning as long as motor 77 is energized. Also, since contact arm engages'contact 72 current will flow from the positive wire 48, through wire 55, wire 92, electric motor 77, wire 93, Wire 83, contact 82, contact arm 81, wire 84, wire 8%, contact arm 70, contact 72, wire 85, wire 86, contact bar 87, wire 88, contact bar 89 and wire 90, back to the negative bus wire 53.

This will cause the motor 77 to function and to rotate the abutment 76. The speed of the abutment 76 may be varied so as to time the action of the abutment 76 but cannot pass, the abutment thus striking leg 78 and bell crank lever 73 which will swing leg 78 out of the way of contact arm 71,

whereupon said contact arm will quickly move.

over as it is resilient and under tension. Arm 71 will move until it engages contact 79 and also until the hook 80 causes the contact arm 81 to move away from contact 82. When this occurs certain parts will function to restore the device to its original position ready for another actuation.

It will be noted that current to motor 77 is turned oil as the current to this motor is through contact 82. By the closing of contact 79 current will flow from the positive bus wire 60 through wire 94, the windings of the opening relay 95, wire 96, contact 79, contact arm 71, contact arm 70, contact 72, wire 85, contact bar 87, wire 88, contact bar 89 and wire 90, back to the negative bus wire 53. Current flowing in the circuit just described is only temporary but will move the con tact bars 89 and 97 to an open position,-while closing the contact bar 100. Upon closing contact bar 100 current will flow from the positive bus wire 60 through wire 61, contact bar 100, wire 101, through the windings of the opening solenoid 4e, and thence through wire 66, back to the negative bus wire 53. When the solenoid 44 is energized, as shown in Figure 3, it will move the locking bar 33- back to its unlocked position. It will be understood that this takes place in a very short time as, for instance, about one second and that contact bar 100 makes contact before contact bar 89 breaks contact.

While contact 100 is'being held closed and the opening solenoid 4c is functioning, contact bar 89 will be moved to an open position, as well as contact bar 97. When contact bar 89 is moved to open position it will deprive magnets 56 of current, whereupon armature 67 will be released and contact arms 70 and 71 will be'moved away from contacts 72 and 79, while contact 82 will be reestablished. This will cause the parts to be in their original position before the actuation of switch 22. 'The parts are then in position to be again actuated by switch 22 in case the same is closed either intentionally or accidentally. Where switch 22 is closed intentionally the various actions as above described take place except the last two, because switch button 19 is pressed and this will result in parts being operated which will prevent the opening solenoid 44 from functioning and thereby prevent other parts from functioning. Upon closing switchbutton 19 after switch 22 has been closed current will pass from the positive bus wire through switch 19, which is closed only temporarily, and thence to wire 102 to the respective contacts 103 and 104. As switch bars 49 and 105 are in open position no current will flow from wire 102. However, wire 106 will be provided with current which will flow through this wire to wire 107, and thence through siren relay 108. From relay 108 current will pass through wire 109 to wire 59, and thence through wire 52 to the negative bus wire 53. As button switch 19 is only held closed for a short time the As soon as bar 99 is moved to closed position current will pass from thepositive bus wire 60, through wire 61, bar 9'7, wire 110, bar 99, wire 107, siren relay 108, wire 109, wire 59 and wire 52, back to the negative bus wire 53. Current flowing in this circuit will maintain siren relay 108 closed so that the siren can function continuously until this circuit has been opened.

As soon as bar 98 has been closed and as long as it is held closed, current will flow from the positive bus wire 60, through wire 61, wire 62, wire 63, bar 98, wire 111 to the siren 20, and from thence through wire 112 to the negative bus wire 53. As bar 87 is held off its contacts current cannot pass through motor 77 or magnet 56 and, consequently, the locking bar 33 will remain inlts locked position and siren 20 will continue to sound. The siren cannot be turned 011, nor can the opening solenoid 44 be caused to function at any point within the building, but can only be caused'to function after the release box 21 has been opened and the switches therein properly operated. As soon as the siren begins to sound, the outside watchman or one or more police officers can open the door 113 of the control box 21. Thisdoor carries switch bar 49, and when this door is opened switch bar 49 immediately connects the contacts 103 and 48'. Also contact bar 105 is closed by the police ofiicer. When bar 105 has been moved to closed position current will flow from wire 48 to contact bar 49, contact 103, contact 104, bar 105, contact 114, wire 115, to the retaining relay 116, and thence through wire 117 to wire 88, through wire 88, bar 89 and wire to the negative bus Wire 53. Bar 120 is a holding contact to malntain positive current on relay 116 after push button 105 has been released.

This will cause retaining relay 116 to move the bars 118 and 120 to closed position. When bar 118 is closed it maintains current on K after relay 51 opens. Current then flowsfrom negative bus 53, wire 90, bar 89, wire 88, wire 117, bar 118, wire 85, contact 72, switch arm 70, thus maintaining negative current on K and keeping it in operation after button 105 has been opened.

When bar 120 closes it serves to maintain positive current on relay 116 until the negative 01!"- cuit is broken by bar 89 when relay operates to unlock the doors. Current will also flow from contact bar to wire 119, wire 50, through wire 50 in the circuit heretofore described, whereby the closing relay 51 will be energized. This will cause the closing relay to be energized, but as the closing solenoid 43 has already functioned no additional results will be secured with respect to this solenoid. However, the closing of the bar 54 will cause electro-magnets 56 to be provided with current and, therefore, cause the same to function; and as it functions the entire time delay mechanism K will function to eventually operate the opening solenoid 44 and restore the system to its original condition. As soon as the time delay mechanism K has functioned, police oflicers or others may pass through the doors, also any one may pass out through the doors as they are unlocked.

As the opening relay 95 is caused to function it will deprive the siren relay 108 of current and thereby open the circuit at the siren so that it will cease to function. The bar 105'in the control box 21 is only temporarily closed and bar 40 is also only temporarily closed. As soon as lid'113 is opened, bar 49 is moved to closed position and immediately an officer or other person may close the contact bar 105 by hand. On releasing contact bar 105 it will move to open position, and upon releasing lid 113 this will swing to a closed position and open bar 49, but as these bars have closed circuits temporarily, the various other parts willfunction as described so that the siren 20 is .turned off and the time delay mechanism K is caused to function to turn on current to the opening solenoid 44 after a certain specified time. Siren 20 is stopped by the operation of the door opening relay 95v opening bar 97.

As the solenoid 44 has functioned the time delay mechanism K is thrown out of operation and the parts are again in their original position, ready to function again if desired. It will be evident that the device may function as often as desired, and that when the foot switch 22 is closed and nothing else is done, the doors are locked for a short time and then automatically unlocked without any noise, or without any action on the part of any one. However, if the switch button 19 is closed during the time that the doors are locked theywill remain locked and the siren 20 will begin to function and continue to function until the control box 21 has been caused to function as just described for opening the circuit to the siren and causing the time delay relay K to unlock the doors. The time delay mechanism K is an old and well known structure and, therefore, forms no part of the invention except in combination. This relay has i been shown in diagram in Figure 6 without using all the details, but it will be understood that as the device is old and well known it will function as described so that the abutment '76 may move as fast or as slow as desired. It will also be noted that the arms 70 and 71 are oifset in such a manner that they are overbalanced and will automatically move to the open position shown in Figure 6 when the armature 6'7 releases the same. Referring to Figures 3 and 4 it will be noted that looking bar 33 is fitted between two pairs of guiding and holding posts 33 so as to take the strain when the bar is in locked position and someone attempts to rotate the door. It should be noted that the foot switch 22 is a momentary contact switch and cannot be held in closed position. This makes it impossible for the doors to be released by pressure of this switch while the siren is sounding, because the circuit is broken at bar 87 of siren relay 108. Switch bar 49 is provided to sound siren if anyone tampers with the release box 21 and succeeds in opening the cover 113.

I claim:

1. A look for a rotatable door including a disc connected to the rotatable door, said disc having a plurality of diametrically opposite notches on one face, a locking bar adapted to move into and out of said notches for locking the disc and the door connected therewith, a bell crank lever pivotally connected to each end of said bar, means for pivotally mounting said bell crank lever, asolenoid operatively connected with one leg of each of said bell crank levers, one of said solenoids acting as an opening solenoid and the other as a closing solenoid, a source of current and a wiring system including said source of current and two circuits, one circuit being through said closing solenoid and the other being through said opening solenoid, a manually actuated switch for closing the circuit to the closing solenoid, and an automatically actuated time delay mechanism in the circuit of the opening solenoid.

2. A look for a rotatable door including a notched member carried by said door, a locking bar adapted to move into and out of the notches in said notched member, a pair of bell crank levers connected with said bar for moving the bar, a solenoid for each of said bell crank levers for actuating said bell crank levers, said solenoids functioning at different times, a circuit for each of said solenoids including a source of current, and a switch for each of said solenoids.

3. A look fora rotatable door including, a disc rigidly secured to said door, said disc having a plurality of pairs of diametrically opposite notches, a bar adapted to be moved into and out of said notches through a parallel motion, a bell crank lever pivotally connected at the respective ends of said bar, means for pivotally mounting said bell crank lever so that as said lever functions said bar will have a parallel motion as it is moved into and out of said notches, a solenoid for each of said bell crank levers, each of said solenoids having a core, said cores being pivotally connected to the respective bell crank levers, a circuit for each of said solenoids, each of said circuits including a source of current and a switch, one of said switches being a manually closed switch and the other being automatically actuated switch timed to close and then open at a spaced interval after the closing of the manually operated switch.

4. In a lock for a revolving door provided with a plurality of blades and a casing forming segments, a ring member having a notch for each of said blades, a locking bar adapted to fit into any pair of notches, said notches being longer than the locking bar is wide whereby when the locking bar is positioned in a locked position in said notches the ring and door may partly rotate a distance suiiicient to permit one of said blades associated with each of said segments to move a suflicient distance away from the segments to permit a person to escape from that part of the doorway opposite the segments electrically, actuated means for moving said bar into said notches, electrically actuated means for moving said bar out of said notches, a separate circuit for each of said electrically actuated means, each of said circuits including a source of current and a switch, one of said switches being a manually closed switch and the other being an automatically actuated switch timed to close and then open at spaced intervals after the closing of the manually operated switch.

HERBERT H. REGER. 

